Question
The marked structure as ‘A’ in the popliteal fossa supplies:
| A. |
Anterior compartment of leg
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| B. |
Anterior and lateral compartment of leg
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| C. |
Anterior and posterior compartment of leg
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| D. |
Posterior compartment of leg
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Show Answer
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Correct Answer � B
Explanation
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Answer B) Anterior and lateral compartment of leg
Explanation: Marked structure is common peroneal nerve
Common peroneal nerve
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The common fibular nerve (common peroneal nerve; external popliteal nerve; lateral popliteal nerve) is a nerve in the lower leg.
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The common peroneal nerve is the smaller and terminal branch of the sciatic nerve which is composed of the posterior divisions of L4, 5, S1, 2.
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It courses along the upper lateral side of the popliteal fossa, deep to biceps femoris and its tendon until it gets to the posterior part of the head of the fibula.
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It divides at the knee into two terminal branches: the superficial fibular nerve and deep fibular nerve, which innervate the muscles of the lateral and anterior compartments of the leg respectively.
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When the common fibular nerve is damaged or compressed, foot drop can ensue.
